-3-
2.
POWER TRANSMISSION CHART
(A)
Generating mechanism of needle bar, thread take-up lever and zigzag movements
Thread take-
up lever
Thread take-
up crank
Worm gear
Timing pulley
Needle bar
crank rod
Needle bar
clamp
Needle bar
Needle bar
block assembly
Needle
Pattern cam
Zigzag connecting
rod
Z finger
Selecting cam
Upper shaft